Home / 210,727.40-316,091.10-209,415.20

Finding the Fourth Proportional to 210,727.40, 316,091.10 and 209,415.20

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Solution

The fourth proportional to 210,727.40, 316,091.10 and 209,415.20 is: 314,122.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,727.40 : 316,091.10 = 209,415.20 : x
  2. Step 2: Convert to fraction form
    210,727.40/316,091.10 = 209,415.20/x
  3. Step 3: Cross multiply
    210,727.40x = 316,091.10 × 209,415.20
  4. Step 4: Simplify right side
    210,727.40x = 66,194,280,924.72
  5. Step 5: Solve for x
    x = 66,194,280,924.72/210,727.40
  6. Step 6: Final answer
    x = 314,122.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.